WOW ! no wonder it's cheap !  

I doubt the sweep will go 3/4 of the circle.

So the loadout is NOT in the cement ??  A BUNCH more grain that will NOT flow out, MORE for the sweep that doesn't sweep
Isn't the point NOT to shovel ???

Get some references and go look at some, doubt that would fly "here"

Tubes SUCK !!   do full floor and loadout can lay on crete pad under air floor, simple clean FULL air IF you need it and a sweep that is a sweep!